Johnson County, Wyoming ZIP codes
4 ZIP codes are in Johnson County, plus 2 that cross in from neighboring counties.
- ZIP codes
- 4
- Population in these ZIPs
- 8,545
- Avg. median income
- $68,000population-weighted
- Cities & towns
- 4
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ZIP codes in Johnson County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 82639 | Kaycee | 782 | $72,112 | $412,600 |
| 82640 | Linch | 175 | $250,001 | $610,500 |
| 82834 | Buffalo | 7,588 | $63,395 | $411,500 |
| 82840 PO Box | Saddlestring | — | — | — |
ZIP codes partly in Johnson County
These ZIP codes are mostly in a neighboring county but cover part of Johnson County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 82831 | Arvada | Campbell County | 153 | $127,500 | $580,900 |
| 82832 | Banner | Sheridan County | 1,386 | $94,375 | $624,400 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Johnson County
Nearby counties
Frequently asked questions
How many ZIP codes are in Johnson County, Wyoming?
4 ZIP codes are mainly in Johnson County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Johnson County?
ZIP codes in Johnson County use the city names Buffalo, Kaycee, Linch and Saddlestring.